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Quantum computation and simulation with superconducting qubits
Superconducting circuits based on Josephson junctions are regarded as one of the most
promising technologies for the implementation of scalable quantum computers. This review …
promising technologies for the implementation of scalable quantum computers. This review …
Signatures of dissipation driven quantum phase transition in Rabi model
By using the worldline Monte Carlo technique, matrix product state, and a variational
approach à la Feynman, we investigate the equilibrium properties and relaxation features of …
approach à la Feynman, we investigate the equilibrium properties and relaxation features of …
Superradiant Quantum Phase Transition for an Exactly Solvable Two-Qubit Spin-Boson Model
A spin-boson-like model with two interacting qubits is analysed. The model turns out to be
exactly solvable since it is characterized by the exchange symmetry between the two spins …
exactly solvable since it is characterized by the exchange symmetry between the two spins …
Environment induced dynamical quantum phase transitions in two-qubit Rabi model
Quantum states beyond thermodynamic equilibrium represent fascinating and cutting-edge
research. However, the behavior of dynamical quantum phase transitions in complex open …
research. However, the behavior of dynamical quantum phase transitions in complex open …
[HTML][HTML] Characterization of Quantum and Classical Critical Points for an Integrable Two-Qubit Spin–Boson Model
The class of two-interacting-qubit spin–boson models with vanishing transverse fields on the
spin-pair is studied. The model can be mapped exactly into two independent standard single …
spin-pair is studied. The model can be mapped exactly into two independent standard single …
Quantum phase transition of many interacting spins coupled to a bosonic bath: Static and dynamical properties
By using worldline and diagrammatic quantum Monte Carlo techniques, matrix product state,
and a variational approach à la Feynman, we investigate the equilibrium properties and …
and a variational approach à la Feynman, we investigate the equilibrium properties and …
Anisotropic signatures in the spin-boson model
Thermal equilibrium properties of nanoscale systems deviate from standard macroscopic
predictions due to non-negligible coupling to the environment. For anisotropic three …
predictions due to non-negligible coupling to the environment. For anisotropic three …
Critical Exponents and Universality for Fractal Time Processes above the Upper Critical Dimensionality
We study the critical behaviors of systems undergoing fractal time processes above the
upper critical dimension. We derive a set of novel critical exponents, irrespective of the order …
upper critical dimension. We derive a set of novel critical exponents, irrespective of the order …
Theory of critical phenomena with long-range temporal interaction
S Zeng, F Zhong - Physica Scripta, 2023 - iopscience.iop.org
We systematically develop theories of critical phenomena with a prior formed memory of a
power-law decaying long-range temporal interaction parameterized by a constant θ> 0 for a …
power-law decaying long-range temporal interaction parameterized by a constant θ> 0 for a …
Quantum criticality of the Ohmic spin-boson model in a high dense spectrum: Symmetries, quantum fluctuations and correlations
X Qian, C Zeng, N Zhou - Physica A: Statistical Mechanics and its …, 2021 - Elsevier
Study of dissipative quantum phase transitions in the Ohmic spin-boson model is
numerically challenging in a dense limit of environmental modes. In this work, large-scale …
numerically challenging in a dense limit of environmental modes. In this work, large-scale …